TITLE: GCN CIRCULAR NUMBER: 31571 SUBJECT: Fermi GRB 220211A: Global MASTER-Net observations report DATE: 22/02/11 01:30:21 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, G.Antipov, D.Zimnukhov, V.Senik, T.Pogrosheva, E.Minkina, A.Chasovnikov, V.Topolev, V.Grinshpun, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev (Irkutsk State University, API), B.L.Carrasco, J.R.Valdes,V.Chavushyan, C.J.Martinez, V.M.Patino Alvarez, M.L.H.Rodriguez (INAOE, OAGH) A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (Blagoveschensk Educational State University) MASTER-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB 220211A ( Fermi GBM team, GCN 31570) errorbox 33 sec after notice time and 64 sec after trigger time at 2022-02-11 01:08:53 UT, with upper limit up to 17.6 mag. The observations began at zenith distance = 53 deg. The sun altitude is -76.1 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 220211A errorbox 54 sec after notice time and 85 sec after trigger time at 2022-02-11 01:09:14 UT, with upper limit up to 18.0 mag. The observations began at zenith distance = 6 deg. The sun altitude is -34.3 deg. The galactic latitude b = 72 deg., longitude l = 82 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1878703 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 69 | 2022-02-11 01:08:53 | MASTER-IAC | (13h 46m 25.74s , +40d 09m 02.1s) | P| | 10 | 15.9 | 69 | 2022-02-11 01:08:53 | MASTER-IAC | (13h 47m 33.50s , +40d 02m 18.2s) | P- | 10 | 16.0 | 95 | 2022-02-11 01:09:14 | MASTER-Kislovodsk | (13h 47m 31.06s , +40d 10m 14.0s) | C | 20 | 16.2 | 95 | 2022-02-11 01:09:14 | MASTER-Kislovodsk | (13h 53m 25.68s , +39d 46m 25.9s) | C | 20 | 15.6 | 105 | 2022-02-11 01:09:23 | MASTER-IAC | (13h 47m 38.91s , +40d 01m 15.3s) | P- | 20 | 16.6 | 105 | 2022-02-11 01:09:23 | MASTER-IAC | (13h 46m 31.14s , +40d 07m 59.6s) | P| | 20 | 16.9 | 135 | 2022-02-11 01:09:54 | MASTER-Kislovodsk | (13h 47m 30.69s , +40d 11m 15.9s) | C | 20 | 17.1 | 170 | 2022-02-11 01:09:54 | MASTER-Kislovodsk | (13h 47m 30.71s , +40d 11m 15.7s) | C | 90 | 18.0 | Coadd 135 | 2022-02-11 01:09:54 | MASTER-Kislovodsk | (13h 53m 25.53s , +39d 47m 27.9s) | C | 20 | 15.9 | 151 | 2022-02-11 01:10:04 | MASTER-IAC | (13h 46m 25.35s , +40d 06m 57.5s) | P| | 30 | 17.2 | 151 | 2022-02-11 01:10:04 | MASTER-IAC | (13h 47m 33.09s , +40d 00m 12.7s) | P- | 30 | 16.5 | 180 | 2022-02-11 01:10:34 | MASTER-Kislovodsk | (13h 47m 36.70s , +40d 10m 16.5s) | C | 30 | 17.4 | 180 | 2022-02-11 01:10:34 | MASTER-Kislovodsk | (13h 53m 31.51s , +39d 46m 30.2s) | C | 30 | 16.0 | 206 | 2022-02-11 01:10:54 | MASTER-IAC | (13h 46m 31.49s , +40d 07m 24.1s) | P| | 40 | 17.4 | 206 | 2022-02-11 01:10:54 | MASTER-IAC | (13h 47m 39.21s , +40d 00m 38.6s) | P- | 40 | 17.0 | 235 | 2022-02-11 01:11:24 | MASTER-Kislovodsk | (13h 47m 30.48s , +40d 09m 18.4s) | C | 40 | 17.4 | 235 | 2022-02-11 01:11:24 | MASTER-Kislovodsk | (13h 53m 25.29s , +39d 45m 33.1s) | C | 40 | 16.3 | 270 | 2022-02-11 01:11:54 | MASTER-IAC | (13h 46m 28.24s , +40d 08m 38.5s) | P| | 50 | 17.5 | 270 | 2022-02-11 01:11:54 | MASTER-IAC | (13h 47m 35.97s , +40d 01m 52.2s) | P- | 50 | 17.1 | 300 | 2022-02-11 01:12:24 | MASTER-Kislovodsk | (13h 47m 36.57s , +40d 09m 24.1s) | C | 50 | 16.9 | 300 | 2022-02-11 01:12:24 | MASTER-Kislovodsk | (13h 53m 31.46s , +39d 45m 39.3s) | C | 50 | 16.0 | 345 | 2022-02-11 01:13:04 | MASTER-IAC | (13h 46m 28.28s , +40d 06m 54.9s) | P| | 60 | 17.6 | 345 | 2022-02-11 01:13:04 | MASTER-IAC | (13h 47m 35.89s , +40d 00m 08.0s) | P- | 60 | 17.2 | 380 | 2022-02-11 01:13:34 | MASTER-Kislovodsk | (13h 47m 34.24s , +40d 10m 51.1s) | C | 70 | 17.7 | 380 | 2022-02-11 01:13:34 | MASTER-Kislovodsk | (13h 53m 29.36s , +39d 47m 07.7s) | C | 70 | 16.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.